One embodiment of the present invention relates to a method with which a terminal transmits an acknowledgement of reception in a wireless communication system, the method comprising the steps of: acquiring downlink control information (DCI) via an enhanced physical downlink control channel (EPDCCH); receiving downlink data via physical downlink shared channel (PDSCH); and transmitting an acknowledgement of reception on the downlink data via a physical uplink control channel (PUCCH) resource; and when the PDSCH is transmitted on a SCell (secondary cell) and the PDSCH is instructed by the EPDCCH, the PUCCH resource is determined on the basis of the transmit power control (TPC) field included in the DCI.
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1. A method for transmitting a reception response in a wireless communication system, performed by a User Equipment (UE), the method comprising: acquiring Downlink Control Information (DCI) via an Enhanced Physical Downlink Control Channel (EPDCCH); receiving downlink data on a Physical Downlink Shared Channel (PDSCH); and transmitting a reception response to the downlink data by using Physical Uplink Control Channel (PUCCH) resources, wherein, if the PDSCH is transmitted on a Secondary Cell (SCell) and indicated by the EPDCCH, the PUCCH resources are determined to correspond to a combination of a value of the Transmit Power Control (TPC) field and a value of an offset field related to the PUCCH resources, among 16 PUCCH resource values, indicated by higher-layer signaling.
A mobile phone (User Equipment or UE) communicates in a wireless network. To acknowledge received data, the phone: 1) receives downlink control information (DCI) via an enhanced physical downlink control channel (EPDCCH); 2) receives data on a physical downlink shared channel (PDSCH); and 3) sends an acknowledgement (ACK) using physical uplink control channel (PUCCH) resources. If the data (PDSCH) is received on a secondary cell (SCell) and scheduled by the EPDCCH, the specific PUCCH resource used for the ACK is chosen from a set of 16 possibilities. The selection is based on combining a transmit power control (TPC) value (included in the DCI) and an offset value signaled from higher layers of the network.
2. The method according to claim 1 , wherein the offset field is padded with 0s.
The method for transmitting a reception response in a wireless communication system, performed by a User Equipment (UE), includes: acquiring Downlink Control Information (DCI) via an Enhanced Physical Downlink Control Channel (EPDCCH); receiving downlink data on a Physical Downlink Shared Channel (PDSCH); and transmitting a reception response to the downlink data by using Physical Uplink Control Channel (PUCCH) resources. When the PDSCH is transmitted on a Secondary Cell (SCell) and indicated by the EPDCCH, the PUCCH resources are determined based on a combination of the Transmit Power Control (TPC) field and an offset field related to the PUCCH resources, chosen from 16 possible PUCCH resource values, as configured by higher-layer signaling. In this method, the aforementioned offset field has zeroes padded to it.
3. The method according to claim 2 , wherein the EPDCCH is transmitted in a Primary Cell (PCell).
The method where a mobile phone (User Equipment or UE) communicates in a wireless network to acknowledge received data comprises: receiving downlink control information (DCI) via an enhanced physical downlink control channel (EPDCCH); receiving data on a physical downlink shared channel (PDSCH); and sending an acknowledgement (ACK) using physical uplink control channel (PUCCH) resources. If the data (PDSCH) is received on a secondary cell (SCell) and scheduled by the EPDCCH, the PUCCH resource is chosen based on a transmit power control (TPC) value and an offset value. The offset field is padded with zeroes, and importantly, the EPDCCH which carries downlink control information is transmitted via a primary cell (PCell).
4. The method according to claim 2 , wherein the offset field is a Hybrid Automatic Repeat reQuest (HARQ)-ACKnowledgment (ACK) resource offset field.
The method for transmitting a reception response in a wireless communication system, performed by a User Equipment (UE), includes: acquiring Downlink Control Information (DCI) via an Enhanced Physical Downlink Control Channel (EPDCCH); receiving downlink data on a Physical Downlink Shared Channel (PDSCH); and transmitting a reception response to the downlink data by using Physical Uplink Control Channel (PUCCH) resources. When the PDSCH is transmitted on a Secondary Cell (SCell) and indicated by the EPDCCH, the PUCCH resources are determined based on a combination of the Transmit Power Control (TPC) field and an offset field related to the PUCCH resources, chosen from 16 possible PUCCH resource values, as configured by higher-layer signaling. Here, the offset field which influences which PUCCH resource to use is specifically a HARQ-ACK resource offset field. HARQ is a method for error correction and retransmission of lost packets.
5. The method according to claim 1 , wherein the value of the offset field related to the PUCCH resources indicates one of {−2, −1, 0, 2}.
The method for transmitting a reception response in a wireless communication system, performed by a User Equipment (UE), includes: acquiring Downlink Control Information (DCI) via an Enhanced Physical Downlink Control Channel (EPDCCH); receiving downlink data on a Physical Downlink Shared Channel (PDSCH); and transmitting a reception response to the downlink data by using Physical Uplink Control Channel (PUCCH) resources. When the PDSCH is transmitted on a Secondary Cell (SCell) and indicated by the EPDCCH, the PUCCH resources are determined based on a combination of the Transmit Power Control (TPC) field and an offset field related to the PUCCH resources, chosen from 16 possible PUCCH resource values, as configured by higher-layer signaling. The offset field in this method can specifically have one of the following four values: -2, -1, 0, or 2.
6. The method according to claim 1 , wherein the DCI is formatted in one of DCI format 1, DCI format 1A, DCI format 1B, DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, and DCI format 2D.
The method for transmitting a reception response in a wireless communication system, performed by a User Equipment (UE), includes: acquiring Downlink Control Information (DCI) via an Enhanced Physical Downlink Control Channel (EPDCCH); receiving downlink data on a Physical Downlink Shared Channel (PDSCH); and transmitting a reception response to the downlink data by using Physical Uplink Control Channel (PUCCH) resources. When the PDSCH is transmitted on a Secondary Cell (SCell) and indicated by the EPDCCH, the PUCCH resources are determined based on a combination of the Transmit Power Control (TPC) field and an offset field related to the PUCCH resources, chosen from 16 possible PUCCH resource values, as configured by higher-layer signaling. In this case, the Downlink Control Information (DCI) is formatted in one of the following formats: DCI format 1, DCI format 1A, DCI format 1B, DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, or DCI format 2D.
7. The method according to claim 1 , wherein the reception response includes at least one of an ACK, a Negative ACK (NACK), and a Discontinuous Transmission (DTX).
The method for transmitting a reception response in a wireless communication system, performed by a User Equipment (UE), includes: acquiring Downlink Control Information (DCI) via an Enhanced Physical Downlink Control Channel (EPDCCH); receiving downlink data on a Physical Downlink Shared Channel (PDSCH); and transmitting a reception response to the downlink data by using Physical Uplink Control Channel (PUCCH) resources. When the PDSCH is transmitted on a Secondary Cell (SCell) and indicated by the EPDCCH, the PUCCH resources are determined based on a combination of the Transmit Power Control (TPC) field and an offset field related to the PUCCH resources, chosen from 16 possible PUCCH resource values, as configured by higher-layer signaling. The reception response can be an acknowledgement (ACK) indicating successful reception, a negative acknowledgement (NACK) indicating failed reception, or a Discontinuous Transmission (DTX) indicating that the UE didn't receive anything.
8. A User Equipment (UE) for transmitting a reception response to an Enhanced Physical Downlink Control Channel (EPDCCH) in a wireless communication system, the UE comprising: a reception module; and a processor, wherein the processor is configured to acquire Downlink Control Information (DCI) via an EPDCCH, receive downlink data on a Physical Downlink Shared Channel (PDSCH), and transmit a reception response to the downlink data by using Physical Uplink Control Channel (PUCCH) resources, and wherein, if the PDSCH is transmitted on a Secondary Cell (SCell) and indicated by the EPDCCH, the PUCCH resources are determined to correspond to a combination of a value of the Transmit Power Control (TPC) field and a value of an offset field related to the PUCCH resources, among 16 PUCCH resource values, indicated by higher-layer signaling.
A mobile phone (User Equipment or UE) is designed to acknowledge received data in a wireless network via an enhanced physical downlink control channel (EPDCCH). The phone includes a receiver and a processor. The processor is programmed to: 1) receive downlink control information (DCI) via the EPDCCH; 2) receive data on a physical downlink shared channel (PDSCH); and 3) send an acknowledgement (ACK) using physical uplink control channel (PUCCH) resources. If the data (PDSCH) is received on a secondary cell (SCell) and scheduled by the EPDCCH, the specific PUCCH resource for the ACK is chosen from 16 possibilities. The selection combines a transmit power control (TPC) value and an offset value signaled from higher layers.
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November 26, 2013
July 25, 2017
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